R410A All DC Inverter V5 X Series 50Hz
MCAC-VTSM-2015-10
158 Troubleshooting
If the oil has been spoiled
The compressor can
’t be lubricated effectively.
The electric heat will rise and the temperature of the motor becomes increasingly high
Leads finally to compressor burnout an damage
The scroll plate, the crankshaft and the compressor bearings will wear
Abrasion leads to larger load, higher current
Worn
crankshaft
Worn
crankshaft
Worn scroll
plate
Worn scroll
plate
A normal
compressor bearing
The bearing is seriously worn,
and completely damaged
A clean filter (on the suction
pipe of the system)
The filter is blocked by impurity; the
compressor suction will be abnormal